In January of 2009, Michelle Obama, the wife of President Barack Obama, became the First Lady of the United States. Like the first ladies who came before her, Mrs. Obama made plans to work on several issues while she had the noticeable position of First Lady. First and foremost, Mrs. Obama wanted to encourage national service. She had a long history of giving back to her community, and she wanted to encourage others to do the same. Second, Mrs. Obama supported community and organic produce gardening. She oversaw the planting of a White House vegetable garden to encourage Americans to follow her lead. Finally, Mrs. Obama wanted to show support to military families. In many cases, troops fighting overseas have left behind families with tremendous needs. Mrs. Obama didn't want to let us forget the sacrifices these families have made, and she wanted to help make the sacrifice easier. Mrs. Obama had been involved in these causes for years, and as First Lady she continued supporting them. What is the best summary of this passage?
A.
First Lady Obama supported national service, community and organic gardening, and military families.
B.
First Lady Obama wanted to encourage others to give back to their community, something she had been doing for years.
C.
First Lady Obama wanted to use her position to encourage community gardening and organic produce.
D.
First Lady Obama had been involved in many causes that she continued to support as First Lady.

the underground railroad (apocope of the metropolitan railroad) is a system of urban trains located within a city and its metropolitan area. it is characterized for being a massive transport of passengers in the big cities, uniting diverse zones and their environs, with high capacity and frequency and in segregated form to other systems of transport. metropolitan railroads are built underground or on the surface, although most systems use mixed models where sections are combined in both modalities.

1 - as a result, the metro tends to reduce car travel for two reasons: first, due to the greater transfer of users from the car and, second, due to the reduction in the acquisition of cars in homes located in sectors near the stations of the metro.

2 -the metro allows to contribute effectively to the achievement of all the objectives of an urban development policy: it improves the efficiency of the city's economy by reducing travel costs and also generates a higher level of activities in the city center, taking advantage of of the agglomeration economies.

3 -it is a clean means of transport, since it uses renewable energy (usually electricity), taking care of the environment and avoiding excessive pollution.

i think you may have asked this twice, but i answered one of the

the two atomic bombs dropped on japan in 1945 killed and maimed hundreds of thousands of people, and their effects are still being felt today. the uranium bomb detonated over hiroshima on 6 august 1945 had an explosive yield equal to 15,000 tonnes of tnt.